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In this science fair project, young children discover what happens when two fluids that have different densities get together.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

This science fair project idea raises awareness of a real ecological issue.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.